--- old/qtbase/src/plugins/platforms/xcb/xcb-plugin.pro 2015-03-17 02:06:42.705930685 +0000
+++ new/qtbase/src/plugins/platforms/xcb/xcb-plugin.pro 2015-03-17 02:08:41.281926351 +0000
@@ -103,7 +103,6 @@

 DEFINES += $$QMAKE_DEFINES_XCB
 LIBS += $$QMAKE_LIBS_XCB
-QMAKE_CXXFLAGS += $$QMAKE_CFLAGS_XCB

 CONFIG += qpa/genericunixfontdatabase

@@ -118,7 +117,8 @@
 contains(QT_CONFIG, xcb-qt) {
     DEFINES += XCB_USE_RENDER
     XCB_DIR = ../../../3rdparty/xcb
-    INCLUDEPATH += $$XCB_DIR/include $$XCB_DIR/sysinclude
+    QMAKE_CFLAGS += -I$$XCB_DIR/include -I$$XCB_DIR/sysinclude $$QMAKE_CFLAGS_XCB
+    QMAKE_CXXFLAGS += -I$$XCB_DIR/include -I$$XCB_DIR/sysinclude $$QMAKE_CFLAGS_XCB
     LIBS += -lxcb -L$$OUT_PWD/xcb-static -lxcb-static
 } else {
     LIBS += -lxcb -lxcb-image -lxcb-icccm -lxcb-sync -lxcb-xfixes -lxcb-shm -lxcb-randr
--- old/qtbase/src/plugins/platforms/xcb/xcb-static/xcb-static.pro      2015-03-17 02:07:04.641929383 +0000
+++ new/qtbase/src/plugins/platforms/xcb/xcb-static/xcb-static.pro      2015-03-17 02:10:15.485922059 +0000
@@ -8,7 +8,7 @@

 XCB_DIR = ../../../../3rdparty/xcb

-INCLUDEPATH += $$XCB_DIR/include $$XCB_DIR/include/xcb $$XCB_DIR/sysinclude
+QMAKE_CFLAGS += -I$$XCB_DIR/include -I$$XCB_DIR/include/xcb -I$$XCB_DIR/sysinclude $$QMAKE_CFLAGS_XCB

 # ignore compiler warnings in 3rdparty code
 QMAKE_CFLAGS_STATIC_LIB+=-w